1231122030000 has 200 divisors, whose sum is σ = 3975727047600. Its totient is φ = 328175232000.

The previous prime is 1231122029993. The next prime is 1231122030011. The reversal of 1231122030000 is 302211321.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×1231122030000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 101663946 + ... + 101676054.

It is an arithmetic number, because the mean of its divisors is an integer number (19878635238).

Almost surely, 2^{1231122030000} is an apocalyptic number.

1231122030000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231122030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1987863523800).

1231122030000 is an abundant number, since it is smaller than the sum of its proper divisors (2744605017600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231122030000 is a wasteful number, since it uses less digits than its factorization.

1231122030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529 (or 15508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1231122030000 its reverse (302211321), we get a palindrome (1231424241321).

The spelling of 1231122030000 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, thirty thousand".